As has been established

Using this phrase requires a bit of tactical planning in your writing or speech. You can't start a conversation with As has been established because, well, nothing has been established yet! You first need to lay the groundwork. State a fact, provide evidence, or get everyone to agree on a premise. Once that work is done, you can circle back to it later using this phrase. It usually appears at the beginning of a sentence to provide context for the next claim. For example: "The company's revenue dropped by 20% in Q3. As has been established, this decline is primarily due to supply chain issues." See how it bridges the two ideas? It makes the second sentence feel like an inevitable conclusion rather than just a random thought. You can also tuck it into the middle of a sentence between commas for a slightly softer touch. It’s like a little "by the way" that adds a layer of professional polish. It’s perfect for those long-form LinkedIn posts where you’re trying to sound like a thought leader. Or, if you’re writing a script for a video essay on YouTube, it helps keep your viewers focused on the narrative arc of your argument.

This phrase lives in the upper echelons of the formality scale. We are talking suits, ties, and leather-bound books. It is a staple of academic writing, legal documents, and formal business presentations. If you’re writing a thesis or a research paper, this phrase is your best friend. It shows the professor that you understand how to build a cumulative argument. In a boardroom, it makes you sound decisive and professional. However, it’s rarely heard in a casual coffee shop conversation unless someone is being intentionally sarcastic or overly dramatic. If you use it while texting your best friend about weekend plans, they might ask if you’ve been replaced by an AI or a 19th-century butler. It’s a "C1 level" tool, meaning it’s for when you want to show off your command of high-level English. It’s not just about the words; it’s about the register—the social setting of the language. Using it correctly shows you know the "rules of the game" in professional environments. It’s the linguistic equivalent of knowing which fork to use at a fancy dinner party.

Imagine you are watching a high-stakes legal drama on Netflix. The lawyer paces the floor and says, "As has been established by the forensic report, the defendant was not at the scene." That’s the classic usage. Or, think about a tech keynote where the CEO says, "As has been established in our previous updates, privacy is our top priority." It’s used to reinforce brand values. You might also see it in the comments section of a serious political debate on X (formerly Twitter), where someone is trying to shut down an argument by referencing a shared fact. Even in gaming, a strategy guide might say, "As has been established in the current meta, speed is more important than raw power." It turns a subjective opinion into a documented rule of the game. It even pops up in those long, detailed reviews on Amazon where someone is explaining why a product failed. "The battery life is poor. As has been established by other reviewers, this is a common defect." In all these cases, the phrase acts as a bridge between evidence and conclusion. It’s the glue that holds a sophisticated argument together.

Reach for this phrase when you are building a multi-step argument. If point B depends on point A, As has been established is the perfect way to introduce point B. Use it in formal emails when you are following up on a previous decision: "As has been established in our last meeting, we will proceed with the merger." It’s great for adding weight to your words. Use it when you want to sound objective and logical rather than emotional. It moves the focus away from "I think" and toward "the facts show." It’s also very useful in persuasive writing, like an op-ed or a cover letter, where you want to lead the reader through a logical progression. If you’ve already mentioned your five years of experience in the first paragraph, you can use the phrase in the third paragraph to link that experience to a specific skill. It’s also a lifesaver in Zoom presentations when someone asks a question you already answered. Instead of saying "I already told you that," you can say, "As has been established earlier in the slide deck..." It’s much more polite and professional.

Please, for the love of all that is holy, don't use this at a first date. "As has been established, I am very allergic to shellfish" is a great way to ensure there isn't a second date. Avoid it in casual texts, unless you’re joking with a friend who appreciates your "nerdy" side. Don't use it if you haven't actually established anything yet. If you start a paragraph with it but didn't mention the point previously, your reader will be confused and might think they missed a page. It’s also not great for high-emotion situations. If someone is upset, using a hyper-logical academic phrase can come across as cold or condescending. Don't use it in very short communications where every word counts, like a 160-character SMS. It’s too bulky for that. Also, avoid overusing it in a single document. If you say it five times in three pages, you start to sound like a broken record that thinks it’s smarter than everyone else. Use it once or twice as a powerful transition, then find other ways to refer back to your points.

The most common error is forgetting the word been. People often say ✗ as has established, which is grammatically incorrect because it lacks the passive voice required for the phrase. Another mistake is using it to refer to something that isn't a fact, but just your opinion. If you say, "As has been established, I am the best singer in this room," you aren't using logic; you’re just being arrogant. Learners also sometimes confuse it with as is established, which is technically okay but sounds much less natural in most contexts. Another pitfall is the "empty reference." This happens when someone says as has been established but never actually established the point earlier. It’s like pointing to a ghost. ✗ As has been established that we need more money → ✓ As has been established, we need more money. Notice the comma! You need that pause to separate the transition from the main clause. Finally, don't mix the formality. ✗ As has been established, this app is totally lit → ✓ As has been established, this application offers significant utility. Keep the vibe consistent throughout the sentence.

If As has been established feels a bit too heavy for your specific situation, you have several other options. As previously noted is a very common alternative that is slightly less "legal" sounding but still very professional. As mentioned earlier is the go-to choice for presentations or casual professional emails. It’s friendlier and less intense. If you want to sound more like a researcher, you might use As evidenced by the data. For a more direct approach, As we have seen works beautifully in both writing and speaking. If you are in a legal or highly technical field, you might use As stipulated previously. On the more informal side, you could just say Like we talked about or As I said. In British English, you might occasionally hear As has been settled, though that’s much more specific to agreements. In American business culture, people love As we discussed, which is the bread and butter of follow-up emails. Each of these carries a slightly different "flavor," so pick the one that fits the room you’re in.

Is this phrase only for writing? Not at all! While it’s very common in formal essays, it’s also used in professional speeches, legal arguments, and high-level meetings. It’s about the level of seriousness, not the medium of communication. Can I use it in a job interview? Yes, it’s a great way to link your skills to your past achievements. "As has been established by my portfolio, I have extensive experience in UX design." Does it always need a comma? Yes, usually. When it starts a sentence, it acts as an introductory phrase, so a comma is needed to help the reader breathe and understand the structure. Is it too old-fashioned? Not really. It’s "timeless" rather than "old-fashioned." It will never go out of style in academic or legal circles because it performs a specific logical function very efficiently. Is there a shorter version? As established is sometimes used, but it’s less formal and can feel slightly rushed. Stick to the full version if you want the full effect of authority and sophistication.